Novel large-scale turbocharger test bed

The invention relates to the technical field of turbocharger testing, in particular to a novel large turbocharger test bench which comprises a screw compressor, the air inlet end of the screw compressor is connected with the second end of a fourth pipeline, and the air outlet end of the screw compressor is connected with the first end of a tee joint through a first pipeline; the second end of the tee joint is connected with the first end of the combustion chamber through a second pipeline, the second end of the combustion chamber is connected with the air inlet end of a turbine shell of the turbocharger through a third pipeline, the air outlet end of the turbine shell is connected with the first end of the exhaust pipeline, and a flow meter is installed at the air inlet end of a compressor shell of the turbocharger. The gas outlet end of the gas compressor shell is connected with the first end of the fourth pipeline, the third end of the tee joint is connected with the first end of the gas supplementing pipel